Ion and electron beam effects on kinetic Alfven waves in an inhomogeneous magnetosphere

被引：10
|
作者：
Dwivedi, AK [1 ]
Varma, P [1 ]
Tiwari, MS [1 ]
机构：
[1] Dr HS Gour Univ, Dept Phys, Sagar 470003, MP, India
来源：
PLANETARY AND SPACE SCIENCE | 2002年 / 50卷 / 01期
关键词：
D O I：
10.1016/S0032-0633(01)00070-8
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Kinetic Alfven waves are examined in the presence of ion and electron beams with bi-Maxwellian distribution functions. The theory of particle aspect analysis is used to evaluate the trajectories of charged particles in the electromagnetic field of a kinetic Alfven wave. The expressions for the field-aligned currents, perpendicular currents (with respect to B-0), dispersion relation and growth-rate with marginal instability criteria are derived. The significance of the investigation for the earth's magnetoplasma is discussed. (C) 2002 Elsevier Science Ltd. All rights reserved.
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收藏
页码：93 / 99
页数：7
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